The Rare EarthsNote 207 — Chapter XI · THE CERIUM GROUP—CERIUMReading editionBer. 1908, 41, 3341.◇[208] Barre, Compt. rend. 1913, 156, 1017.◇Copy noteReturn to CHAPTER XI THE CERIUM GROUP—CERIUMReturn to CHAPTER XI THE CERIUM GROUP—CERIUM